{"id":"CVE-2019-14853","aliases":["GHSA-2mrj-435v-c2cr","GHSA-pwfw-mgfj-7g3g","PYSEC-2019-177"],"url":"https://o3.security/vulnerability/CVE-2019-14853","summary":"Duplicate Advisory: possible DoS caused by malformed signature decoding in Pure-Python ECDSA","details":"An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.","published":"2019-11-26T13:15:10.537Z","modified":"2026-10-20T10:50:43.812503172Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.02407,"percentile":0.82684,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"ecdsa","fixedVersion":"0.13.3"}],"fix":null,"references":[{"type":"WEB","url":"https://seclists.org/bugtraq/2019/Dec/33"},{"type":"ADVISORY","url":"https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4588"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-14853"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-2mrj-435v-c2cr"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-pwfw-mgfj-7g3g"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2019-177.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:50:43.812503172Z"}}